Time to start up this old thread again. My 05 won't pass inspection because it won't complete the emissions test in Massachusetts. There is no code given and my check engine light is not on. I was told the probable cause was the battery went dead or was disconnected so I had to drive it 50 miles or more to reset the onboard computer, so I did. I brought it back with 100 more miles driven and the inspecton machine could not complete the emissions test. I drove 200 more miles and bought it back again and still no sticker. Does anyone know if 300 miles is enought to reset the computer, or as a regional GM service tech (friend of mine) said to bring it to a Chrysler dealer so they can hook it up to their diagnostic computer and it should tell me what the problem is and it might just need to have the onboard computer reflashed. Any thoughts? I'm told there is 3 months left on my emissions warrantee, but since it sounds like this might be a computer problem it won't be covered.